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From <dlmar...@comcast.net>
Subject RE: Moving HDFS name node to another host in accumulo 1.6
Date Sat, 17 Jan 2015 03:18:09 GMT
In 1.6, accumulo.metadata entries are absolute URLs. You can change the existing URLs using
the instance.volume.replacments[1] parameter.

[1] http://accumulo.apache.org/1.6/accumulo_user_manual.html#_instance_volumes_replacements


> -----Original Message-----
> From: webmaster@webmaster.ms [mailto:webmaster@webmaster.ms] On
> Behalf Of Denis
> Sent: Friday, January 16, 2015 7:53 PM
> To: user@accumulo.apache.org
> Subject: Re: Moving HDFS name node to another host in accumulo 1.6
> 
> Hello
> 
> Table "accumulo.metadata" contains absolute urls in a form of hdfs://old-
> name-node:8020/....
> I do not know how to work around it, except of patching accumulo code
> adding .replace(OLD_NODE, NEW_NODE) into relevant places
> 
> On 1/17/15, Calvin Feder <calvin.feder@argyledata.com> wrote:
> > We need to move the HDFS name node of our cluster to a new host (the
> > old host is experiencing hardware issues and may die at any time).  We
> > need to keep the current accumulo data.  We are trying to do it in a
> > test environment and running into numerous issues. We stopped the
> > cluster, moved the name node to a new host, and restarted the cluster.
> > We changed the entry in zookeeper for the accumulo root tablet to the
> > new location, and got accumulo to start.  We see all of the tables we
> > expected to see in accumulo, and they show up in the monitor as
> > "online", but the monitor shows that no tablets or entries exist in
> > those tables, and obviously we cannot scan them.
> >
> > This is an example of what we are seeing:
> >
> > [cid:image002.png@01D031A9.978AE280]
> >
> > Has anyone tried to do something similar?  What are we missing?
> >
> > Thank you,
> > ___________________________________________
> > Calvin Feder | QA Lead | Argyle Data, Inc.
> > [cid:A79ABAC4-829A-4B95-AFE2-C09282CD7AE7]
> >
> >
> >
> >
> >
> > ________________________________
> >
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> > Thank you in advance for your cooperation.
> >
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> >


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